Industrial Revolution
technological revolution

The other thing is this: we're in the third industrial revolution now.

In the early 19th century, there was an industrial revolution.

"An industrial revolution has taken place in only four years."

This all changed after the industrial revolution, particularly in the 20th Century.

Everyone studies the industrial revolution in school but most of us don't really understand it.

New England was an early center of the industrial revolution.

Now up to 440 parts per million, from 280 before the industrial revolution.

By the early 19th century, the industrial revolution began to have an impact on the area.

The area began to be developed in the industrial revolution.

It had been the same when the industrial revolution came along.